.el-header,
.el-main {
    padding: 0;
}

.el-image {
    width: 100%;
    height: 100%;
    background-color: #f5f7fa;
}

.el-image .image-slot {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    background: #f5f7fa;
}

.el-image .icon-placeholder {
    font-size: 50px;
    color: #999;
}

.el-backtop {
    width: 60px;
    height: 130px;
    font-size: 0;
    box-shadow: none;
}

.el-backtop:hover {
    background: none;
}